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| 不同改性生物炭对污染土壤As形态及土壤环境因子的修复研究 |
| Remediation Effects of Different Modified Biochar on Arsenic Species and Soil Environmental Factors in Contaminated Soil |
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| DOI： |
| 中文关键词: As污染土壤 改性生物炭 砷形态 土壤修复 |
| 英文关键词: Arsenic contaminated soil Modified biochar Arsenic species Soil remediation |
| 基金项目:国家自然科学基金资助项目（42072201）；安徽省高校协同创新基金资助项目（GXXT-2021-017）；安徽省一般工业固废处置与资源化利用工程研究中心基金资助项目（KJGG-2022-7） |
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| 摘要点击次数: 156 |
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| 中文摘要: |
| 采用毛竹生物质制备原始生物炭（BC）、Mg-Al改性生物炭（MABs）及氧化改性生物炭（HBC-1、HBC-2），通过试验分析4种生物炭对砷（As）污染土壤的修复效果及环境因子影响。结果表明，BC与HBC-1、HBC-2可降低土壤pH值并提高电导率，且HBC-2能显著提升土壤有机质含量，使有效态砷含量较空白组下降4512%，促进As由活性形态向残渣态转化（比例提高864%）。结合XPS表征，发现HBC-2对砷的稳定机制以氧化还原和静电吸附为主。 |
| 英文摘要: |
| This study prepared raw biochar（BC）， Mg Al modified biochar（MABs） and oxidized modified biochar（HBC 1 and HBC 2） from phyllostachys pubescens， analyzed the remediation effects of the four types of biochar on arsenic contaminated soil and their impact on environmental factors through experiments. The results indicated that BC， HBC 1 and HBC 2 could reduce pH value and increase electrical conductivity of soil. HBC 2 could significantly increase the content of organic matter in soil， reduce the available arsenic content by 4512% compared to the bland group， and promote the transition of arsenic from its active form to its residual state（an increase of 864% in proportion）. It was found that the stabilizing effect of HBC 2 on arsenic was primarily oxidation reduction and electrostatic adsorption according to XPS analysis. |
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